CN113953876A - Positioning tool for machining workpiece with eccentric shaft - Google Patents
Positioning tool for machining workpiece with eccentric shaft Download PDFInfo
- Publication number
- CN113953876A CN113953876A CN202111347970.5A CN202111347970A CN113953876A CN 113953876 A CN113953876 A CN 113953876A CN 202111347970 A CN202111347970 A CN 202111347970A CN 113953876 A CN113953876 A CN 113953876A
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- eccentric shaft
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- 238000003754 machining Methods 0.000 title claims abstract description 30
- 238000012545 processing Methods 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a positioning tool for processing a workpiece with an eccentric shaft, wherein at least one pair of hole combinations (13) are symmetrically distributed in the center of the positioning tool (1); during machining, a workpiece (2) to be machined is fixed with the positioning tool (1) through the hole combination (13). The hole combination (13) comprises a pin hole (132) and a screw hole (131) for positioning; the workpiece (2) to be processed is provided with a female pin hole (212) matched with the pin hole (132), and is also provided with a female screw hole (211) matched with the screw hole (131). During machining, the positioning tool (1) and the workpiece (2) to be machined are inserted into the pin hole (132) and the female pin hole (212) for positioning, and then screws are screwed into the screw holes (131) and the female screw holes (211) for fixing. Compared with the prior art, the invention has the advantages of flexible disassembly and assembly, convenient maintenance, wide application range, safety, reliability and the like.
Description
Technical Field
The invention relates to the field of eccentric workpiece machining, in particular to a positioning tool for machining a workpiece with an eccentric shaft.
Background
The eccentric workpiece is a workpiece with the outer circle and the outer circle of the part or the outer circle being parallel to the axis of the inner hole and not coincident with each other and deviating a distance. The distance between these two parallel axes is called eccentricity. The part with the outer circle eccentric to the outer circle is called an eccentric shaft or an eccentric disc; the part with the eccentric excircle and the inner hole is called an eccentric sleeve.
The machining of eccentric parts is a difficult point in mechanical machining, and three-jaw and four-jaw chucks are generally adopted for machining eccentric parts such as eccentric bearings, cams and the like on a common machine tool. With the continuous development of science and technology, the demand on eccentric parts is more and more, and the precision is higher and more, so the demand on the eccentric clamps is correspondingly increased, and the application prospect is wide. Eccentric shaft type parts are one of the common typical parts. According to different structural forms of shaft parts, the shaft parts can be generally divided into optical axis eccentricity, stepped shaft eccentricity, special-shaped eccentric shaft and the like; or a solid eccentric shaft, a hollow eccentric shaft, etc. They are also used in machines to support gear, pulley, etc. drive components to transmit torque or motion.
At present, a general tool for machining an eccentric structure workpiece does not exist.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the positioning tool for machining the workpiece with the eccentric shaft, which is flexible to disassemble and assemble, convenient to maintain, wide in application range, safe and reliable.
The purpose of the invention can be realized by the following technical scheme:
a positioning tool for processing a workpiece with an eccentric shaft is provided, wherein at least one pair of hole combinations are arranged in the center of the positioning tool symmetrically; when the machining is carried out, the workpiece to be machined is fixed with the positioning tool through the hole combination.
Further, the hole combination comprises a pin hole and a screw hole for positioning; the workpiece to be processed is provided with a female pin hole matched with the pin hole and a female screw hole matched with the screw hole.
During processing, the positioning tool and a workpiece to be processed insert the plug pins into the pin holes and the female pin holes for positioning, and then screws are screwed into the screw holes and the female screw holes for fixing.
Furthermore, an eccentric shaft is arranged on the workpiece to be processed, and the female pin hole and the female screw hole are concentrically arranged with the eccentric shaft.
Further, at least 3 pairs of holes are combined. The positioning device is respectively used for positioning and mounting the same workpiece in three different processes.
Furthermore, the positioning tool is provided with at least two small screw holes which are symmetrically distributed and used for positioning the positioning tool on the equipment foundation plate.
Furthermore, the positioning tool is provided with at least four large screw holes which are symmetrically distributed and used for positioning the positioning tool on the equipment foundation plate.
Furthermore, a reinforcing ring is arranged on the workpiece to be machined along the axial direction.
Furthermore, grooves are uniformly distributed on the reinforcing ring.
Furthermore, a plurality of large holes are formed in the workpiece to be processed.
Further, during machining, the eccentric shaft is matched with the circle center of the positioning tool.
Compared with the prior art, the invention has the following advantages:
(1) the invention adopts the pin and the screw hole to complete positioning firstly and complete fixing and locking, thereby being safe and reliable;
(2) the invention can be used for 3 process links with different requirements on the precision of the processed workpiece, the complete sets of holes corresponding to different process segments are combined and are distinguished by the aperture size, and the application range is wide;
(3) the invention has flexible disassembly and assembly and convenient maintenance: pins and screws are used for easy mounting and fixing.
Drawings
FIG. 1 is a plan view of the positioning tool in the embodiment;
FIG. 2 is a first cross-sectional view of the positioning tool in the embodiment;
FIG. 3 is a second cross-sectional view of the positioning tool in the embodiment;
FIG. 4 is a third sectional view of the positioning tool in the embodiment;
FIG. 5 is a fourth sectional view of the positioning tool in the embodiment;
FIG. 6 is a plan view of a workpiece to be processed in the embodiment;
FIG. 7 is a side view of a workpiece to be processed in the example;
the reference numbers in the figures indicate: the machining device comprises a positioning tool 1, a big screw hole 11, a small screw hole 12, a hole combination 13, a screw hole 131, a pin hole 132, a workpiece 2 to be machined, an eccentric shaft 21, a female screw hole 211, a female pin hole 212, a reinforcing ring 22, a groove 221 and a big hole 23.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
Examples
A positioning tool for processing a workpiece with an eccentric shaft is shown in figures 1-5, wherein 3 hole pairs of assemblies 13 are symmetrically distributed in the center of the positioning tool 1; during machining, the workpiece 2 to be machined is fixed with the positioning tool 1 through the hole combination 13. The hole combination 13 includes a pin hole 132 and a screw hole 131 for positioning; still be equipped with two at least symmetric distributions on the location frock 1 and be used for fixing a position the little screw hole 12 on the equipment foundatin plate of frock 1. Still be equipped with four at least symmetric distributions on the location frock 1 and be used for fixing a position frock 1 big screw hole 11 on the equipment foundatin plate.
As shown in fig. 6 to 7, the workpiece 2 to be processed is provided with a female pin hole 212 matching the pin hole 132, and is further provided with a female screw hole 211 matching the screw hole 131. The workpiece 2 to be machined is provided with an eccentric shaft 21, and a female pin hole 212 and a female screw hole 211 are arranged concentrically with the eccentric shaft 21. The workpiece 2 to be machined is provided with a reinforcing ring 22 in the axial direction. The reinforcing ring 22 is uniformly provided with grooves 221. The workpiece 2 to be machined is provided with a plurality of large holes 23.
During machining, the eccentric shaft 21 is matched with the circle center of the positioning tool 1. During machining, the positioning tool 1 and the workpiece 2 to be machined are inserted into the pin hole 132 and the female pin hole 212 for positioning, and then screws are screwed into the screw holes 131 and the female screw holes 211 for fixing.
For example, during turning, the turning center axis can be positioned at the geometric center or eccentric axis of the workpiece 2 to be machined, and is used for disc profile machining and shaft machining respectively. When the eccentric shaft is machined, the eccentric shaft of the workpiece 2 to be machined needs to be aligned to the center of the positioning tool 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, so that any person skilled in the art can make modifications or changes in the technical content disclosed above. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. The positioning tool for processing the workpiece with the eccentric shaft is characterized in that at least one pair of hole combinations (13) are arranged in the positioning tool (1) in a centrosymmetric manner; during machining, a workpiece (2) to be machined is fixed with the positioning tool (1) through the hole combination (13).
2. The positioning tool for machining the workpiece with the eccentric shaft is characterized in that the hole combination (13) comprises a pin hole (132) and a screw hole (131) for positioning; the workpiece (2) to be processed is provided with a female pin hole (212) matched with the pin hole (132), and is also provided with a female screw hole (211) matched with the screw hole (131).
3. The positioning tool for machining the workpiece with the eccentric shaft according to claim 2, wherein the workpiece (2) to be machined is provided with the eccentric shaft (21), and the female pin hole (212) and the female screw hole (211) are concentrically arranged with the eccentric shaft (21).
4. The positioning tool for machining the workpiece with the eccentric shaft is characterized in that at least 3 pairs of hole combinations (13) are arranged.
5. The positioning tool for machining the workpiece with the eccentric shaft according to claim 1, wherein the positioning tool (1) is further provided with at least two small screw holes (12) which are symmetrically distributed and used for positioning the positioning tool (1) on an equipment base plate.
6. The positioning tool for machining the workpiece with the eccentric shaft according to claim 1, wherein the positioning tool (1) is further provided with at least four large screw holes (11) which are symmetrically distributed and used for positioning the positioning tool (1) on an equipment base plate.
7. The positioning tool for machining the workpiece with the eccentric shaft according to claim 1, wherein a reinforcing ring (22) is axially arranged on the workpiece (2) to be machined.
8. The positioning tool for machining the workpiece with the eccentric shaft as claimed in claim 7, wherein the reinforcing ring (22) is uniformly provided with grooves (221).
9. The positioning tool for machining the workpiece with the eccentric shaft according to claim 1, wherein a plurality of large holes (23) are formed in the workpiece (2) to be machined.
10. The positioning tool for machining the workpiece with the eccentric shaft according to claim 3, wherein the eccentric shaft (21) is matched with the center of a circle of the positioning tool (1) during machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111347970.5A CN113953876A (en) | 2021-11-15 | 2021-11-15 | Positioning tool for machining workpiece with eccentric shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111347970.5A CN113953876A (en) | 2021-11-15 | 2021-11-15 | Positioning tool for machining workpiece with eccentric shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113953876A true CN113953876A (en) | 2022-01-21 |
Family
ID=79470541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111347970.5A Pending CN113953876A (en) | 2021-11-15 | 2021-11-15 | Positioning tool for machining workpiece with eccentric shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113953876A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583432A (en) * | 1984-11-01 | 1986-04-22 | Amp Incorporated | Supercentering workpiece holder |
| CN2832419Y (en) * | 2005-10-27 | 2006-11-01 | 扬动股份有限公司 | Non-collinear three-hole machining clamp |
| CN201979328U (en) * | 2011-04-12 | 2011-09-21 | 杭州千岛湖陆行泵业有限公司 | Clamp of eccentric bushing |
| CN103358157A (en) * | 2012-03-31 | 2013-10-23 | 新兴重工湖北三六一一机械有限公司 | Fixture for machining eccentric rotary bodies |
| CN204686460U (en) * | 2015-06-04 | 2015-10-07 | 上海尊优自动化设备有限公司 | A kind of multi-angle locating and machining frock |
-
2021
- 2021-11-15 CN CN202111347970.5A patent/CN113953876A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583432A (en) * | 1984-11-01 | 1986-04-22 | Amp Incorporated | Supercentering workpiece holder |
| CN2832419Y (en) * | 2005-10-27 | 2006-11-01 | 扬动股份有限公司 | Non-collinear three-hole machining clamp |
| CN201979328U (en) * | 2011-04-12 | 2011-09-21 | 杭州千岛湖陆行泵业有限公司 | Clamp of eccentric bushing |
| CN103358157A (en) * | 2012-03-31 | 2013-10-23 | 新兴重工湖北三六一一机械有限公司 | Fixture for machining eccentric rotary bodies |
| CN204686460U (en) * | 2015-06-04 | 2015-10-07 | 上海尊优自动化设备有限公司 | A kind of multi-angle locating and machining frock |
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Application publication date: 20220121 |